At $55, it's true that the Beer Foamer is by all practical means a superfluous device that, from what we can tell, is technically a milk frother in a nicer package. But the rituals around the experience of alcohol are largely defined by the superfluous. Do we need to decant table wine in a crystal container when swishing the liquid around in our glass works just as well? Do we need specialized spoons when any old piece of tableware would stir just as effectively?

Yes indeed, that's frozen foam that's been cooled to -5 degrees Celsius! Perfect for keeping your brewski nice and cold. Not needed in Russia, Canada, and Northern Europe, where you can just, you know, step outside...